77921480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21407}}^1$

素因数の和:21438

約数の個数: 64

約数和(自身を含む): 215792640

約数和(自身を除く): 137871160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21407, 42814, 85628, 107035, 149849, 171256, 214070, 278291, 299698, 428140, 556582, 599396, 749245, 856280, 1113164, 1198792, 1391455, 1498490, 1948037, 2226328, 2782910, 2996980, 3896074, 5565820, 5993960, 7792148, 9740185, 11131640, 15584296, 19480370, 38960740, 77921480]

約数ペア:

[(1, 77921480), (2, 38960740), (4, 19480370), (5, 15584296), (7, 11131640), (8, 9740185), (10, 7792148), (13, 5993960), (14, 5565820), (20, 3896074), (26, 2996980), (28, 2782910), (35, 2226328), (40, 1948037), (52, 1498490), (56, 1391455), (65, 1198792), (70, 1113164), (91, 856280), (104, 749245), (130, 599396), (140, 556582), (182, 428140), (260, 299698), (280, 278291), (364, 214070), (455, 171256), (520, 149849), (728, 107035), (910, 85628), (1820, 42814), (3640, 21407)]